PAPR Reduction of OFDM Signal by Use of DSI Method with Time-Frequency Domain Swapping Algorithm

Pisit BOONSRIMUANG  Katsuhiro NAITO  Kazuo MORI  Tawil PAUNGMA  Hideo KOBAYASHI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B   No.4   pp.1001-1006
Publication Date: 2007/04/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.4.1001
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
OFDM,  PAPR,  dummy sub-carriers,  non-linear amplifier,  

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Summary: 
The main disadvantage of orthogonal frequency division multiplexing (OFDM) is the high time domain PAPR. The larger PAPR signal would fatally degrade BER performance in non-linear channels. This paper proposes an improved DSI method, which can achieve better PAPR and BER performances in the non-linear channel with less computation complexity than the conventional DSI method. The feature of proposed method is to employ the time-frequency domain swapping algorithm in the determination of frequency data for dummy sub-carriers. This paper presents various computer simulation results to verify the effectiveness of proposed DSI method.